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using System;
using System.Drawing;
using System.Runtime.InteropServices;
using geom = java.awt.geom;
using JMath = java.lang.Math;
namespace System.Drawing.Drawing2D
{
public sealed class Matrix : MarshalByRefObject, IDisposable
{
#region fields
static internal readonly Matrix IdentityTransform = new Matrix();
readonly geom.AffineTransform _nativeMatrix;
#endregion
#region ctors
internal Matrix (geom.AffineTransform ptr)
{
_nativeMatrix = ptr;
}
public Matrix () : this(new geom.AffineTransform())
{
}
public Matrix (Rectangle rect , Point[] plgpts)
{
double x1 = plgpts[1].X - plgpts[0].X;
double y1 = plgpts[1].Y - plgpts[0].Y;
double x2 = plgpts[2].X - plgpts[0].X;
double y2 = plgpts[2].Y - plgpts[0].Y;
_nativeMatrix = new geom.AffineTransform(x1/rect.Width, y1/rect.Width, x2/rect.Height, y2/rect.Height, plgpts[0].X, plgpts[0].Y);
_nativeMatrix.translate(-rect.X,-rect.Y);
}
public Matrix (RectangleF rect , PointF[] plgpts)
{
double x1 = plgpts[1].X - plgpts[0].X;
double y1 = plgpts[1].Y - plgpts[0].Y;
double x2 = plgpts[2].X - plgpts[0].X;
double y2 = plgpts[2].Y - plgpts[0].Y;
_nativeMatrix = new geom.AffineTransform(x1/rect.Width, y1/rect.Width, x2/rect.Height, y2/rect.Height, plgpts[0].X, plgpts[0].Y);
_nativeMatrix.translate(-rect.X,-rect.Y);
}
public Matrix (float m11, float m12, float m21, float m22, float dx, float dy)
: this(new geom.AffineTransform(m11,m12,m21,m22,dx,dy))
{
}
#endregion
#region properties
public float[] Elements
{
get
{
float [] elems = new float[] {
(float)NativeObject.getScaleX(),
(float)NativeObject.getShearY(),
(float)NativeObject.getShearX(),
(float)NativeObject.getScaleY(),
(float)NativeObject.getTranslateX(),
(float)NativeObject.getTranslateY()};
return elems;
}
}
public bool IsIdentity
{
get
{
return NativeObject.isIdentity();
}
}
public bool IsInvertible
{
get
{
try
{
return NativeObject.getDeterminant() != 0.0;
}
catch(geom.NoninvertibleTransformException)
{
return false;
}
}
}
public float OffsetX
{
get
{
return (float)NativeObject.getTranslateX();
}
}
public float OffsetY
{
get
{
return (float)NativeObject.getTranslateY();
}
}
#endregion
#region methods
public Matrix Clone()
{
return new Matrix ((geom.AffineTransform)NativeObject.clone());
}
public void Dispose ()
{
}
internal void CopyTo(Matrix matrix) {
matrix.NativeObject.setTransform(NativeObject);
}
public override bool Equals (object obj)
{
Matrix m = obj as Matrix;
if (m == null)
return false;
return NativeObject.equals(m.NativeObject);
}
public override int GetHashCode ()
{
return NativeObject.hashCode();
}
public void Invert ()
{
try {
_nativeMatrix.setTransform( _nativeMatrix.createInverse() );
}
catch(geom.NoninvertibleTransformException e) {
throw new ArgumentException(e.Message, e);
}
}
public void Multiply (Matrix matrix)
{
Multiply (matrix, MatrixOrder.Prepend);
}
public void Multiply (Matrix matrix, MatrixOrder order)
{
Multiply(matrix.NativeObject, order);
}
public void Reset()
{
NativeObject.setToIdentity();
}
public void Rotate (float angle)
{
NativeObject.rotate (JMath.toRadians(angle));
}
public void Rotate (float angle, MatrixOrder order)
{
Multiply(geom.AffineTransform.getRotateInstance(JMath.toRadians(angle)), order);
}
public void RotateAt (float angle, PointF point)
{
NativeObject.rotate (JMath.toRadians(angle), point.X, point.Y);
}
public void RotateAt (float angle, PointF point, MatrixOrder order)
{
Multiply(geom.AffineTransform.getRotateInstance(JMath.toRadians(angle),point.X, point.Y), order);
}
public void Scale (float scaleX, float scaleY)
{
NativeObject.scale (scaleX, scaleY);
}
public void Scale (float scaleX, float scaleY, MatrixOrder order)
{
Multiply(geom.AffineTransform.getScaleInstance(scaleX, scaleY), order);
}
public void Shear (float shearX, float shearY)
{
NativeObject.shear(shearX, shearY);
}
public void Shear (float shearX, float shearY, MatrixOrder order)
{
Multiply(geom.AffineTransform.getShearInstance (shearX, shearY), order);
}
public void TransformPoints (Point[] pts)
{
geom.Point2D.Float pt = new geom.Point2D.Float();
for(int i =0;i < pts.Length;i++) {
pt.setLocation(pts[i].X,pts[i].Y);
NativeObject.transform(pt,pt);
pts[i].X=(int)pt.getX();
pts[i].Y=(int)pt.getY();
}
}
public void TransformPoints (PointF[] pts)
{
geom.Point2D.Float pt = new geom.Point2D.Float();
for(int i =0;i < pts.Length;i++) {
pt.setLocation(pts[i].X,pts[i].Y);
NativeObject.transform(pt,pt);
pts[i].X=(float)pt.getX();
pts[i].Y=(float)pt.getY();
}
}
public void TransformVectors (Point[] pts)
{
geom.Point2D.Float pt = new geom.Point2D.Float();
for(int i =0;i < pts.Length;i++) {
pt.setLocation(pts[i].X,pts[i].Y);
NativeObject.deltaTransform(pt,pt);
pts[i].X=(int)pt.getX();
pts[i].Y=(int)pt.getY();
}
}
public void TransformVectors (PointF[] pts)
{
geom.Point2D.Float pt = new geom.Point2D.Float();
for(int i =0;i < pts.Length;i++) {
pt.setLocation(pts[i].X,pts[i].Y);
NativeObject.deltaTransform(pt,pt);
pts[i].X=(float)pt.getX();
pts[i].Y=(float)pt.getY();
}
}
public void Translate (float offsetX, float offsetY)
{
NativeObject.translate (offsetX, offsetY);
}
public void Translate (float offsetX, float offsetY, MatrixOrder order)
{
Multiply(geom.AffineTransform.getTranslateInstance(offsetX, offsetY), order);
}
public void VectorTransformPoints (Point[] pts)
{
TransformVectors (pts);
}
internal geom.AffineTransform NativeObject
{
get
{
return _nativeMatrix;
}
}
void Multiply(geom.AffineTransform at, MatrixOrder order) {
Multiply(NativeObject, at, order);
}
internal static void Multiply(geom.AffineTransform to, geom.AffineTransform add, MatrixOrder order) {
if(order == MatrixOrder.Prepend)
to.concatenate(add);
else
to.preConcatenate(add);
}
#endregion
}
}
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